The response from Cashman is very much out of character and clearly shows the frustration he and the Yankees' front office are feeling toward their embattled superstar, who is a central figure in MLB's investigation of players' alleged ties to the now-closed Biogenesis clinic in South Florida. A-Rod's name appears numerous times in records allegedly written by former clinic director Anthony Bosch, who may have supplied A-Rod and others with performance-enhanching drugs. Rodriguez has denied any connection. MLB has gotten Bosch to cooperate in its probe.